Merge branch 'main' into test

# Conflicts:
#	backend/cmd/server/VERSION
#	backend/ent/migrate/schema.go
#	backend/ent/mutation.go
#	backend/ent/runtime/runtime.go
#	backend/ent/usagelog.go
#	backend/ent/usagelog/usagelog.go
#	backend/ent/usagelog/where.go
#	backend/ent/usagelog_create.go
#	backend/ent/usagelog_update.go
#	backend/internal/repository/usage_log_repo.go
#	backend/internal/server/api_contract_test.go
#	backend/internal/server/middleware/cors.go
#	backend/internal/service/gateway_service.go

frontend/src/components/account/CreateAccountModal.vue

@@ -1538,6 +1538,46 @@
             </button>
           </div>
         </div>
+
+        <!-- Cache TTL Override -->
+        <div class="rounded-lg border border-gray-200 p-4 dark:border-dark-600">
+          <div class="flex items-center justify-between">
+            <div>
+              <label class="input-label mb-0">{{ t('admin.accounts.quotaControl.cacheTTLOverride.label') }}</label>
+              <p class="mt-1 text-xs text-gray-500 dark:text-gray-400">
+                {{ t('admin.accounts.quotaControl.cacheTTLOverride.hint') }}
+              </p>
+            </div>
+            <button
+              type="button"
+              @click="cacheTTLOverrideEnabled = !cacheTTLOverrideEnabled"
+              :class="[
+                'relative inline-flex h-6 w-11 flex-shrink-0 cursor-pointer rounded-full border-2 border-transparent transition-colors duration-200 ease-in-out focus:outline-none focus:ring-2 focus:ring-primary-500 focus:ring-offset-2',
+                cacheTTLOverrideEnabled ? 'bg-primary-600' : 'bg-gray-200 dark:bg-dark-600'
+              ]"
+            >
+              <span
+                :class="[
+                  'pointer-events-none inline-block h-5 w-5 transform rounded-full bg-white shadow ring-0 transition duration-200 ease-in-out',
+                  cacheTTLOverrideEnabled ? 'translate-x-5' : 'translate-x-0'
+                ]"
+              />
+            </button>
+          </div>
+          <div v-if="cacheTTLOverrideEnabled" class="mt-3">
+            <label class="input-label text-xs">{{ t('admin.accounts.quotaControl.cacheTTLOverride.target') }}</label>
+            <select
+              v-model="cacheTTLOverrideTarget"
+              class="mt-1 block w-full rounded-md border border-gray-300 bg-white px-3 py-2 text-sm shadow-sm focus:border-primary-500 focus:outline-none focus:ring-1 focus:ring-primary-500 dark:border-dark-500 dark:bg-dark-700 dark:text-white"
+            >
+              <option value="5m">5m</option>
+              <option value="1h">1h</option>
+            </select>
+            <p class="mt-1 text-xs text-gray-500 dark:text-gray-400">
+              {{ t('admin.accounts.quotaControl.cacheTTLOverride.targetHint') }}
+            </p>
+          </div>
+        </div>
       </div>
 
       <div>
@@ -2250,6 +2290,8 @@ const maxSessions = ref<number | null>(null)
 const sessionIdleTimeout = ref<number | null>(null)
 const tlsFingerprintEnabled = ref(false)
 const sessionIdMaskingEnabled = ref(false)
+const cacheTTLOverrideEnabled = ref(false)
+const cacheTTLOverrideTarget = ref<string>('5m')
 
 // Gemini tier selection (used as fallback when auto-detection is unavailable/fails)
 const geminiTierGoogleOne = ref<'google_one_free' | 'google_ai_pro' | 'google_ai_ultra'>('google_one_free')
@@ -2721,6 +2763,8 @@ const resetForm = () => {
   sessionIdleTimeout.value = null
   tlsFingerprintEnabled.value = false
   sessionIdMaskingEnabled.value = false
+  cacheTTLOverrideEnabled.value = false
+  cacheTTLOverrideTarget.value = '5m'
   antigravityAccountType.value = 'oauth'
   upstreamBaseUrl.value = ''
   upstreamApiKey.value = ''
@@ -3393,6 +3437,12 @@ const handleAnthropicExchange = async (authCode: string) => {
       extra.session_id_masking_enabled = true
     }
 
+    // Add cache TTL override settings
+    if (cacheTTLOverrideEnabled.value) {
+      extra.cache_ttl_override_enabled = true
+      extra.cache_ttl_override_target = cacheTTLOverrideTarget.value
+    }
+
     const credentials = {
       ...tokenInfo,
       ...(interceptWarmupRequests.value ? { intercept_warmup_requests: true } : {})
@@ -3486,6 +3536,12 @@ const handleCookieAuth = async (sessionKey: string) => {
           extra.session_id_masking_enabled = true
         }
 
+        // Add cache TTL override settings
+        if (cacheTTLOverrideEnabled.value) {
+          extra.cache_ttl_override_enabled = true
+          extra.cache_ttl_override_target = cacheTTLOverrideTarget.value
+        }
+
         const accountName = keys.length > 1 ? `${form.name} #${i + 1}` : form.name
 
         // Merge interceptWarmupRequests into credentials